If you want to try the features that are included in a platinum license, you can
start a 30-day trial.

You are allowed to initiate a trial license only if your cluster has not
already activated a trial license for the current major product version. For
example, if you have already activated a trial for v6.0, you cannot start a new
trial until v7.0. You can, however, contact info@elastic.co to request an
extended trial license.